Ladder step



FIG. 1 is a front view of a ladder step showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a rear, top, and right side perspective thereof; and,

FIG. 7 is a front, bottom, and right side perspective view thereof. 

CLAIM The ornamental design for a ladder step, as shown and described. 